[PrevPage] [Next] [INDEX ]  Volume 1   19 Feb. 1876    Page 14  [Source] [ NOTES ]

February 19th 1876

Rotating DRUM AND REED RCVR

  1. Cylinder C with bar magnets revolved in front of electro-magnet M Musical note heard to proceed from R which changed in pitch with revolution of C. Armature S of R could be felt to tremble.
  2. Cylinder C set spinning + allowed to come gradually to rest. Descending musical note heard from R which became momentarily loud when the unison of S was reached.
  3. Same experiment repeated with 1,2+3 cells of battery in the circuit ­ without increassing the effect. If any-
[PrevPage] [Next] [INDEX ]  Volume 1   19 Feb. 1876    Page 14  [Source] [ NOTES ]